You have exceeded the number of accounts allowed, You are only allowed to update your account.

Username

Password

To start Instagram automation you need to enter your Instagram username and password. We will not save your password and username in our database.
Follow this steps:
1) Enter your username and password
2) Click on button "Submit".
3) Once you will see a "checkpoint_required" open an Instagram from the app and tap on "It was me" on Instagram app.
4) Enter your username and password again,click on "Submit" and the account will be seen below or on Manage Instagram Accounts page.